Pump.



S. E. BELLAH.

PUMP.

APPLlCATiON FILED MAR.23, 191s.

Patented May 8, 1917.

2 S EE S HECT 2 Cir UNTTED %TATE% PATENT @FFTQE SAMUEL E. BELLAH, OF CHIRICAHUA, ARIZONA, ASSIGNOB F ONE-HALF TO TIMOTHY PERKINS BLE'VINS, OF Cl-IIRICAHUA, ARIZONA.

PUMP.

Specification of Letters Patent.

Patented May 8, 1%17.

Application filed March 23, 1916. Serial No. 86,229.

To all whom it may concern:

Be it known that I, SAMUEL E. BELLAH, a citizen of the United States, residing at Chiricahua, in the county of Cochise and State of Arizona, have invented certain new and useful Improvements in Pumps; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in pumps, the principal object being to obtain a force pump which will be very simple in construction and capable of being operated with but a very small expenditure of power.

An additional object is to provide a device of this character which can be manufactured at a very reasonable cost, and one which is not liable to get out of repair or become deranged by use.

lVith this and many other objects in view, my invention resides in certain novel features of construction, combination and arrangement of parts which will be hereinafter more particularly described and claimed and shown in the drawings wherein:

Figure 1 is a side elevation of a pump constructed in accordance with my invention;

Fig. 2 is a similar view showing the cover plate removed, the parts being in section;

Fig. 3 is a central vertical section; and

Fig. 1 is a vertical transverse section taken on the line 4-l of Fig. 3.

This improved pump may be either submerged in the water of the well or raised above the same as desired. In its preferred construction, the pump proper comprises a substantially rectangular casing 1 in which is formed a piston chamber 2, the lower end of which connects with an inlet said inlet having an intake pipe l threaded thereinto which conveys water from the well to the interior of the pump. This inlet is closed by means of a flap valve 5 hinged to one wall of said opening by means of which the water drawn into the chamber 2 may drop therein and force through an I outlet port 6 upon proper actuation of the piston therein. The last mentioned opening or port is closed by an additional flap valve 7.

The piston chamber 2 communicates by way of the outlet port 6 with an arcuate passageway 8 which is formed in the casing 1 through which it is necessary for the water to be forced to reach the outlet pipe 9 which is threaded into the upper portion of the casing 1 and extends upwardly to the surface of the ground where it discharges its water when the pump is operated. As hereinbeforo mentioned, the casing 1 is rec tangular in side elevation and is formed of two parts in one of which the piston chamher 2 and the arcuate passageway are formed, while the other part forms a cover 1, whereby access can be gained to the interior thereof when the same is removed.

The casing also contains a supplemental piston chamber 10 whose upper end communicates directly with the lower end of the outlet pipe 9, by way of the opening 10, said chamber being separated from the passageway by the arcuate wall 11. A member 12 is pivoted intermediate its ends upon a pivot pin 13 to form the main and the supplemental pistons 14. and respectively. the former being disposed within the piston chamber 2, while the latter operates in the supplemental chamber 10. The piston 15 is provided with an air and water tight connection with the wall 11 of the chamber to prevent the leakage of water between said piston and the bottom wall 11 of said chamber.

The other piston 14 which is preferably disposed in the same plane with the piston 15 is provided on its outer end with an car 16 which is connected by means of a link 17 to the lower formed end of a piston rod 18.- The link 17 preferably has its lower end bifurcated as at 17' to straddle the ear 16 by which it is connected thereby by a pivot pin, the opposite end of the link being reduced to form an ear to be disposed between the bifurcated ends 18 of said piston rod. The piston rod 18 operates in the recess 19 in the casing 1 and extends slightly above the same where it is connected to the lower end of the connecting rod 20 movable in a vertical plane by any suitable operating means above the surface of the ground.

From the drawings it will be seen that when the piston rod 18 is at its lowermost position, the piston 14 will cover the outlet port 6, it being, at the end of its down stroke when in this position. The other piston, however, will be at the end of its up stroke, the outlet 10 from the chamber 10 of the outlet pipe line being closed. In Fig. 3 the pistons are shown reversed, the main piston 14 being at the end of its up stroke, while the supplemental piston 15 is at the end of its down stroke. It will be obvious that when the piston rod is operated to move the pistons to this position, water will be sucked past the inlet valve 5 from the water in the well by the piston 14, the outlet valve 7 being closed, and assuming there is already water within the outlet pipe 9, some of this water will enter the chamber 10 above the piston 15. When, however, the piston rod is forced downwardly and the pistons assume the positions shown in Fig. 2, the inlet valve 5 will be closed, the outlet valve 7 opened, the water in the chamber 2 being forced out through the port 6, through the passageway 8 and up the outlet pipe 9, the piston 15 at the same time expelling the water in the chamber 10 therefrom and also forcing it up the outlet pipe. This operation is repeated until the water is forced to the top of the pipe 9 and the requisite amount of water has been drawn from the well.

To prevent a partial vacuum forming in the chamber 10 and to facilitate the opera tion of the pump, 1 provide an air outlet 21 which extends through the wall and communicates with the interior of said chamber, said outlet being extended through the cover plate 1' which carries a suitable pipe 22. The length of this pipe 22 depends upon the position of the pump within the well; if the same is submerged, said pipe is extended above the surface of the water, but otherwise it is merely a short section extended upwardly as shown.

With a pump constructed as above described and as shown in the drawings, it may be operated with rather greater ease than the ordinary force pump, inasmuch as the weight of the piston and the connecting rod will tend to counterbalance the weight of the water which is being raised. Also, as the outlet pipe 9 is placed substantially directly above the piston 15, it is obvious that the weight of the column of water therein will tend to force the same downwardly and raise the piston 15, and thus draw water into the chamber 2 through the valve 5. In addition to the advantages derived from this case of operation, it will also be seen that because of the few moving parts, this improved pump will not be likely to get out of order in the operation thereof.

1 claim:

1. A suction pump comprising a pump body, main and auxiliary segmental piston chambers in said body and having their curved sides formed around the same axis, a main and an auxiliary piston rigidly joined and mounted on a common pivot, said pistons being disposed respectively in said main and auxiliary chambers, an inlet into the lower end of the main chamber having a check valve opening into the latter, a piston rod slidable in said body and connected to the main piston, a passage formed in the body from a point adjacent the main chamber and extending around the auxiliary chamber to a point adjacent the upper end of the body, an outlet pipe communicating with the upper end of said passage, a port establishing constant open communication between said end of the passage and the upper end of the auxiliary chamber, an unobstructed air vent from the lower end of said auxiliary chamber, and a port leading from the main chamber into the lower end of said passage and having a check valve opening into the latter.

2. A suction pump comprising a flat body disposed in a vertical plane and having formed in one side a segmental main piston chamber and a segmental auxiliary piston chamber, each having its curved wall formed around the same axis, said side also having formed therein a passage leading from a point adjacent said main chamber around said auxiliary chamber to a point adjacent the upper end of the body, an outlet pipe rising rigidly from said body and communicating with the upper end of said passage, a port establishing constant open communication between said end of the passage and the upper end of the auxiliary piston chamber, a port leading from the main piston chamber into the lower end of said passage and having a check valve opening into the latter, an inlet into the lower end of said main chamber having a check valve opening into the same, a main and an auxiliary piston joined rigidly and received respectively in the main and auxiliary chambers, said pistons being mounted on a common pivot, a vertical piston rod connected to said main piston, said side of the body having a vertical groove slidably receiving said rod, and a cover plate secured over said side of the body and closing the two chanr bers, the aforesaid passage and said groove.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

SAMUEL E. BELLAH.

Witnesses DICK BLEVINS, WV. J. BLEVINS.

Copies oi this patent may be obtained for five cents each, by addressing the Commissioner of Eatents. Washington, D. G. 

